Massive marijuana farm found near Modesto, Calif.

The largest indoor marijuana operation ever discovered in Stanislaus County, Calif., was busted by local, state and federal officers Monday.

A barn at 10815 S. Carpenter Road in Crows Landing was producing about $2 million worth of marijuana every three months, according to local law enforcement.

Six men were apprehended at the property Monday. The men, all from the Bay Area, were arrested and booked at the Stanislaus County Jail on suspicion of possession, cultivation and sales of marijuana; conspiracy; and weapons charges.

Law enforcement officials were tipped off to the operation in a rural area south of Modesto by a member of the public and launched an investigation. What they found was a large-scale growing operation with a generator to provide power to the lighting, irrigation and heating systems.

"It was sophisticated and elaborate to the point that it was so self-contained," said Sgt. Rick Armendariz, a Modesto police spokesman. "It had an industrial generator that was running everything, and everything was on timers and separated into different phases of growth."